Preparation method of low-carbon high-strength microwave-cured adhesive ecological bamboo-based material

Abstract

The present invention discloses a method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material, comprising the following steps: S1, treating a bamboo-based material with chemical reagents to remove lignin and hemicellulose, thereby obtaining a bamboo-based three-dimensional porous structure; S2, filling the interior of the bamboo-based three-dimensional porous structure with an adhesive, thereby obtaining a bamboo-based adhesive structure; S3, wrapping the outer surface of the bamboo-based adhesive structure with mixed fibers to obtain a wrapped structure; S4, heating the wrapped structure and causing the adhesive inside to seep outward through reciprocating vibration, thereby forming adhesive points with the outer wrapping fibers to form an adhesive structure; S5, splicing several wrapped structures together and wrapping them with mixed fibers, applying pressure to cause the adhesive to penetrate into the wrapped structures to form an adhesive plate-like structure; and S6, microwave-curing the adhesive plate-like structure to obtain a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material. This method improves the disadvantage of bamboo-based materials being easily hygroscopic and simultaneously increases the overall strength of the bamboo-based material to prevent microbial erosion.

Description

Technical Field

[0001] The present invention relates to the field of host materials, and in particular to a method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material. Background Art

[0002] When exposed to microwaves, materials undergo physical phenomena such as heating and melting, while also undergoing chemical reactions. Microwave radiation can make chemical reactions several or even dozens of times more efficient than conventional methods, at the same or even lower temperatures. This characteristic can be exploited for chemical synthesis or for solidifying liquid resins through microwaves, a technique known as microwave curing.

[0003] Bamboo is an environmentally friendly, renewable biomass material with advantages such as rapid growth and a high strength-to-weight ratio. Currently, bamboo is used to manufacture composite materials such as reconstituted bamboo and bamboo laminates, which are widely used in furniture, architecture, and landscaping. Furthermore, bamboo is also being used to develop new functional materials such as flexible capacitors, microreactors, and microcapsules.

[0004] However, as a biomass material, bamboo has drawbacks such as high hygroscopicity, flammability, and susceptibility to microbial attack. Furthermore, bamboo's porous, layered, and anisotropic structure has yet to be fully exploited. Therefore, there is a need to modify bamboo and bamboo-based composites to enhance their performance to meet the demands of specialized applications. Summary of the Invention

[0005] The present invention overcomes the deficiencies of the prior art and provides a method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material.

[0006] To achieve the above object, the technical solution adopted by the present invention is: a method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material, comprising the following steps:

[0007] S1. Treating the bamboo-based material with chemical reagents to remove lignin and hemicellulose to obtain a bamboo-based three-dimensional porous structure;

[0008] S2. Filling the interior of the bamboo-based three-dimensional porous structure with an adhesive to obtain a bamboo-based adhesive structure;

[0009] S3, using mixed fibers to wrap the outer surface of the bamboo-based adhesive structure to obtain a wrapped structure; the mixed fibers are carbon fibers and nylon fibers in a certain ratio and wound in parallel directions; the nylon fibers are PA6 fibers or PA66 fibers;

[0010] S4, after heating the wrapped structure, vibrating the wrapped structure back and forth to cause the adhesive inside to seep outward, forming adhesive points with the outer wrapping fibers, thereby forming an adhesive wrapped structure;

[0011] S5, splicing a plurality of the wrapped structures, and then wrapping them with the mixed fiber, while applying pressure and allowing the adhesive to penetrate into the wrapped structures to form an adhesive plate-like structure;

[0012] S6. Perform microwave curing on the adhesive plate-like structure to obtain a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material.

[0013] In a preferred embodiment of the present invention, in S3, the coverage rate of the mixed fiber on the outer surface of the bamboo-based adhesive structure is 85% to 100%.

[0014] In a preferred embodiment of the present invention, in S3, the ratio of the number of carbon fibers to the number of nylon fibers is 1:4-6.

[0015] In a preferred embodiment of the present invention, in said S4, the heating temperature range is 110-160°C.

[0016] In a preferred embodiment of the present invention, in said S4, reciprocatingly vibrating the plurality of wrapped structures comprises the following steps:

[0017] S41, placing the plurality of wrapped structures on a vibration device, and adjusting the vibration direction to a horizontal direction;

[0018] S42. Adjust the sweep mode of the vibration device to frequency doubling or linear, the sweep range to 21-35 Hz, and the output wave frequency to 13-20 Hz.

[0019] In a preferred embodiment of the present invention, in S5, the time of immersing in the adhesive is controlled to be 65-80 minutes; and the coverage rate of the mixed fiber on the outer surface of the wrapped structure is 70% to 85%.

[0020] In a preferred embodiment of the present invention, in S5, the specific step of applying pressure to allow the adhesive to penetrate into the interior of the wrapped structure is: placing the wrapped structure in a sealed sample chamber, and pressing the adhesive into the interior by controlling a high-pressure pump connected to the sample chamber, with a pressure range of 45-60 MPa.

[0021] In a preferred embodiment of the present invention, in S6, microwave curing the adhesive plate-like structure includes the following steps:

[0022] S61, heating the adhesive plate-like structure with a microwave power of 70-100 W for 10-25 minutes, stopping the heating and keeping the temperature for 5-10 minutes, and then continuing to heat for 10-25 minutes;

[0023] S62. Use a microwave power of 140-180 W to cure the adhesive plate-like structure for 35-50 minutes and then cool it naturally.

[0024] In a preferred embodiment of the present invention, in S1, the specific steps of treating the bamboo-based material with chemical reagents are: placing the bamboo-based material in a boiling mixed solution of NaOH and Na2SO3 for heat treatment to remove part of the lignin and hemicellulose; and repeatedly washing the bamboo-based material with high-temperature deionized water and then soaking and washing with H2O2 to completely remove residual NaOH and Na2SO3.

[0025] In a preferred embodiment of the present invention, in S2, the adhesive is an inorganic adhesive or an organic adhesive.

[0026] The present invention solves the defects existing in the background technology and has the following beneficial effects:

[0027] (1) The present invention removes lignin and hemicellulose by chemical means, thereby removing part of the lignin and hemicellulose in the bamboo fiber, exposing more pores to form a three-dimensional porous structure, which can accommodate more adhesives, thereby increasing the void capacity of the bamboo-based material, increasing the utilization rate of the internal pores of the bamboo-based material, and improving the degree of integration between the bamboo-based material and the adhesive, thereby ensuring the surface strength and hardness of the bamboo-based material.

[0028] (2) The present invention winds a certain amount of carbon fiber and nylon fiber in parallel directions, so that the coverage rate of carbon fiber and nylon fiber on the surface of the bamboo-based adhesive structure can reach more than 90%, forming an efficient coating of the bamboo-based adhesive structure, ensuring the high mechanical strength and high strength of the wrapped structure; at the same time, the use of carbon fiber can improve the mechanical strength and modulus of the material, and nylon fiber can increase the friction and wear performance of the material.

[0029] (3) After the wrapping structure is heated, the adhesive inside the wrapping structure seeps outward through reciprocating vibration, forming adhesive points with the external wrapping fibers. The combined effect of the several adhesive points formed by the high coverage rate can greatly increase the contact area between the bamboo-based material and the adhesive, thereby simultaneously improving the strength and wear resistance.

[0030] (4) The present invention splices several wrapped structures and then wraps them again with mixed fibers, fixing the multiple wrapped structures into a plate-like structure, thereby improving the surface strength of the material. At the same time, pressure is applied to allow the adhesive to penetrate into the interior of the wrapped structure, further filling the internal pores and further connecting with the previous wrapped structure, thereby strengthening the wrapping strength and improving the internal strength of the bamboo-based material.

[0031] (5) The present invention effectively improves the integration degree between the adhesive and the bamboo-based material through microwave curing, improves the disadvantage of the bamboo-based material being easy to absorb moisture, and at the same time improves the overall strength of the bamboo-based material to avoid being eroded by microorganisms, and reduces the porosity of the bamboo-based composite material. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments described in the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive efforts.

[0033] Figure 1 It is a specific flow chart of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0037] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0038] Figure 1 The present invention is a specific flow chart of a method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material, comprising the following steps:

[0039] S1. Treating the bamboo-based material with chemical reagents to remove lignin and hemicellulose to obtain a bamboo-based three-dimensional porous structure;

[0040] S2. Filling the interior of the bamboo-based three-dimensional porous structure with an adhesive to obtain a bamboo-based adhesive structure; it should be noted that the adhesive is an inorganic adhesive or an organic adhesive;

[0041] S3, using mixed fibers to wrap the outer surface of the bamboo-based adhesive structure to obtain a wrapped structure; the mixed fibers are carbon fibers and nylon fibers in a certain ratio and wound in parallel directions; the nylon fibers are PA6 fibers or PA66 fibers, preferably PA66 fibers;

[0042] S4. After heating the wrapped structure, the wrapped structure is subjected to reciprocating vibration to cause the adhesive inside to seep outward, forming adhesive points with the outer wrapping fibers to form an adhesive wrapped structure;

[0043] S5. Splicing a plurality of adhesive wrapped structures, and then wrapping them with mixed fibers, while applying pressure and allowing the adhesive to penetrate into the adhesive wrapped structures to form an adhesive plate-like structure;

[0044] S6. Microwave-curing the adhesive plate-like structure to obtain a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material.

[0045] In S1, the specific steps of treating the bamboo-based material with chemical reagents are: placing the bamboo-based material in a boiling mixed solution of NaOH and Na2SO3 for heat treatment to remove part of the lignin and hemicellulose; and repeatedly washing the bamboo-based material with high-temperature deionized water and then soaking and washing with H2O2 to completely remove residual NaOH and Na2SO3.

[0046] By chemically removing lignin and hemicellulose, part of the lignin and hemicellulose in the bamboo fiber is removed, exposing more pores to form a three-dimensional porous structure, which can accommodate more adhesives, thereby increasing the void capacity of the bamboo-based material, improving the utilization rate of the internal pores of the bamboo-based material, and improving the integration of the bamboo-based material and the adhesive, thereby ensuring the surface strength and hardness of the bamboo-based material.

[0047] In S3, the hybrid fiber coating on the outer surface of the bamboo-based adhesive structure reaches a coverage rate of 85% to 100%. The ratio of carbon fiber to nylon fiber is 1:4-6. By twisting a certain number of carbon fibers and nylon fibers in parallel directions, the coverage rate of the carbon fibers and nylon fibers on the surface of the bamboo-based adhesive structure can reach over 90%, forming a highly efficient coating of the bamboo-based adhesive structure, ensuring high mechanical strength and strength. The use of carbon fibers also improves the mechanical strength and modulus of the material, while the nylon fibers enhance the friction and wear resistance of the material.

[0048] In S4, reciprocatingly vibrating the plurality of wrapped structures comprises the following steps:

[0049] S41, placing the plurality of wrapped structures on a vibration device, and adjusting the vibration direction to a horizontal direction;

[0050] S42. Adjust the sweep mode of the vibration device to frequency doubling or linear, the sweep range to 21-35 Hz, and the output wave frequency to 13-20 Hz.

[0051] After the wrapping structure is heated in the range of 110-160℃, the adhesive inside the wrapping structure seeps outward through reciprocating vibration, forming bonding points with the external wrapping fibers. The combined effect of several bonding points formed by the high coverage rate can greatly increase the contact area between the bamboo-based material and the adhesive, and simultaneously improve the strength and wear resistance.

[0052] In S5, the specific steps of applying pressure to allow the adhesive to penetrate into the interior of the wrapped structure are: placing the wrapped structure into a sealed sample chamber, and pressing the adhesive into the interior by controlling a high-pressure pump connected to the sample chamber, with a pressure range of 45-60 MPa.

[0053] It should be noted that, in S5, the time of immersion in the adhesive is controlled to be 65-80 minutes; and the coverage rate of the mixed fiber on the outer surface of the adhesive wrapped structure is 70% to 85%.

[0054] After splicing several adhesive wrapped structures, they are wrapped again with mixed fibers, and then fixed into a plate-like structure, which improves the surface strength of the material. At the same time, pressure is applied to allow the adhesive to penetrate into the adhesive wrapped structure, further filling the internal pores and further connecting with the previous wrapped structure, thereby strengthening the wrapping strength and improving the internal strength of the bamboo-based material.

[0055] In S6, microwave curing of the adhesive sheet structure includes the following steps:

[0056] S61, heating the adhesive plate-like structure using a microwave power of 70-100 W for 10-25 minutes, stopping the heating and keeping the temperature for 5-10 minutes, and then continuing to heat for 10-25 minutes;

[0057] S62. Use a microwave power of 140-180W to cure the adhesive plate structure for 35-50 minutes and then cool it naturally.

[0058] Microwave curing can effectively improve the integration degree between adhesive and bamboo-based materials, improve the disadvantage of bamboo-based materials being easy to absorb moisture, and at the same time improve the overall strength of bamboo-based materials to avoid erosion by microorganisms, and reduce the porosity of bamboo-based composite materials.

[0059] Example 1

[0060] S1. Place the bamboo-based material in a boiling mixed solution of NaOH and Na2SO3, and heat it at 100°C, wherein the amount of Na2SO3 is 400 mmol / g and the molar ratio of NaOH to Na2SO3 is 1:6, to remove part of the lignin and hemicellulose; and repeatedly wash the bamboo-based material with hot deionized water and then soak and wash it with 3% H2O2 to completely remove the residual NaOH and Na2SO3, thereby obtaining a bamboo-based three-dimensional porous structure;

[0061] S2. Filling the interior of the bamboo-based three-dimensional porous structure with an organic adhesive to obtain a bamboo-based adhesive structure;

[0062] S3, winding carbon fibers and PA66 fibers in a ratio of 1:5 in parallel directions, and wrapping the outer surface of the bamboo-based adhesive structure with a coverage rate of 95% to obtain a wrapped structure; winding carbon fibers and PA66 fibers in a ratio of 1:5 in parallel directions;

[0063] S4. After heating the wrapped structures at 125°C, several wrapped structures were placed on a ZD-20 vibration machine. The vibration direction was adjusted to the horizontal direction, and the sweep mode was adjusted to the double frequency. The sweep frequency range was 32 Hz, and the output wave frequency was 17 Hz. Horizontal vibration was performed to make the internal adhesive seep outward and form bonding points with the external wrapped fibers, thereby forming an adhesive wrapped structure.

[0064] S5. Splice several adhesively wrapped structures and then wrap them with mixed fibers to a coverage rate of 82%. Then, place the adhesively wrapped structure in a sealed sample chamber. Use a DP-160 high-pressure pump connected to the sample chamber to press the adhesive into the chamber at a pressure range of 45-60 MPa for 70 minutes to form an adhesive sheet-like structure.

[0065] S6. Place the adhesive plate-like structure into the XH-200C all-purpose microwave curing reactor for microwave curing. First, use 82W of microwave power to heat the adhesive plate-like structure for 15 minutes, then stop heating and keep warm for 10 minutes and continue heating for 20 minutes; then use 160W of microwave power to cure the adhesive plate-like structure for 45 minutes and then cool it naturally to obtain a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material.

[0066] The tensile test of the composite material was carried out using a DH-10080 universal testing machine with a tensile rate set to 2 mm / min. An extensometer was used to measure the deformation of the composite material during the tensile process, and the measured directional tensile strength was 21.38 MPa.

[0067] The above-mentioned universal testing machine was used to carry out longitudinal compression tests on composite materials. The specimens were cut into 45 mm (length) × 10 mm (width) × 6 mm (thickness). The loading rate was 7 mm / min. The longitudinal compression strengths were measured to be 2.63 MPa (20% strain stroke), 5.75 MPa (40% strain stroke), and 20.84 MPa (60% strain stroke).

[0068] The friction and wear properties of the composite material were tested using a HRTA02 reciprocating friction and wear testing machine. The composite material was cut into 35 mm (length) × 10 mm (width) × 2 mm (thickness), and a Q235 steel ball with a diameter of 6.35 mm was used as the grinding surface. The loading force was 207 N, and the friction coefficient was measured to be 0.27 and the wear was 5.1 mg / 1000 cycles.

[0069] Example 2

[0070] The difference between this embodiment and embodiment 1 is that in S2, an organic adhesive and an organic expansion agent are filled inside the bamboo-based three-dimensional porous structure with an expansion rate of 6% to obtain a bamboo-based adhesive structure; and in S4, after the wrapped structure is heated at 125°C, the filled organic expansion agent begins to expand outward, and causes the internal adhesive to seep outward together, forming adhesive points with the external wrapping fibers, thereby forming an wrapped structure.

[0071] The remaining process and operating parameters are the same as those in Example 1.

[0072] The tensile test of the composite material was carried out using a DH-10080 universal testing machine with a tensile rate set to 2 mm / min. An extensometer was used to measure the deformation of the composite material during the tensile process, and the measured directional tensile strength was 22.59 MPa.

[0073] The above-mentioned universal testing machine was used to carry out longitudinal compression tests on composite materials. The specimens were cut into 45 mm (length) × 10 mm (width) × 6 mm (thickness). The loading rate was 7 mm / min. The longitudinal compression strengths were measured to be 2.05 MPa (20% strain stroke), 4.98 MPa (40% strain stroke), and 19.87 MPa (60% strain stroke).

[0074] The friction and wear properties of the composite material were tested using a HRTA02 reciprocating friction and wear testing machine. The composite material was cut into 35 mm (length) × 10 mm (width) × 2 mm (thickness), and a Q235 steel ball with a diameter of 6.35 mm was used as the grinding surface. The loading force was 207 N, and the friction coefficient was measured to be 0.21 and the wear was 5.8 mg / 1000 cycles.

[0075] Comparative Example 1

[0076] S1. Place the bamboo-based material in a boiling mixed solution of NaOH and Na2SO3, and heat it at 100°C, wherein the amount of Na2SO3 is 400 mmol / g and the molar ratio of NaOH to Na2SO3 is 1:6, to remove part of the lignin and hemicellulose; and repeatedly wash the bamboo-based material with hot deionized water and then soak and wash it with 3% H2O2 to completely remove the residual NaOH and Na2SO3, thereby obtaining a bamboo-based three-dimensional porous structure;

[0077] S2. applying an organic adhesive to the outside of the bamboo-based three-dimensional porous structure to obtain a bamboo-based adhesive structure;

[0078] S3, winding the nylon fibers in parallel directions and wrapping them around the outer surface of the bamboo-based adhesive structure with a coverage rate of 95% to obtain a wrapped structure;

[0079] S4. Place the wrapped structure into the XH-200C all-purpose microwave curing reactor for microwave curing. First, use 82W of microwave power to heat the adhesive plate-like structure for 15 minutes, then stop heating and keep warm for 10 minutes and continue heating for 20 minutes; then use 160W of microwave power to cure the adhesive plate-like structure for 45 minutes and then cool it naturally to obtain a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material.

[0080] The tensile test of the composite material was carried out using a DH-10080 universal testing machine with a tensile rate set to 2 mm / min. An extensometer was used to measure the deformation of the composite material during the tensile process, and the measured directional tensile strength was 15.74 MPa.

[0081] The above-mentioned universal testing machine was used to carry out longitudinal compression tests on composite materials. The specimens were cut into 45 mm (length) × 10 mm (width) × 6 mm (thickness). The loading rate was 7 mm / min. The longitudinal compression strengths were measured to be 1.57 MPa (20% strain stroke), 3.08 MPa (40% strain stroke), and 11.43 MPa (60% strain stroke).

[0082] The friction and wear properties of the composite material were tested using a HRTA02 reciprocating friction and wear testing machine. The composite material was cut into 35 mm (length) × 10 mm (width) × 2 mm (thickness), and a Q235 steel ball with a diameter of 6.35 mm was used as the grinding surface. The loading force was 207 N. The friction coefficient was measured to be 0.74 and the wear was 10.7 mg / 1000 cycles.

[0083] The above experimental results show that the use of mixed fibers for multiple wrapping in the present invention can improve the strength of the material and improve the friction resistance of the material.

[0084] The above description is based on the ideal embodiment of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the content of the specification and must be determined according to the scope of the claims.

Claims

1. A method for preparing low-carbon, high-strength microwave-cured adhesive ecological bamboo-based materials, characterized in that: The following steps are involved: S1. Treating the bamboo-based material with chemical reagents to remove lignin and hemicellulose to obtain a bamboo-based three-dimensional porous structure; S2. Filling the interior of the bamboo-based three-dimensional porous structure with an adhesive to obtain a bamboo-based adhesive structure; S3, using mixed fibers to wrap the outer surface of the bamboo-based adhesive structure to obtain a wrapped structure; the mixed fibers are carbon fibers and nylon fibers in a certain ratio and wound in parallel directions; the nylon fibers are PA6 fibers or PA66 fibers; S4, after heating the wrapped structure, vibrating the wrapped structure back and forth to cause the adhesive inside to seep outward, forming adhesive points with the outer wrapping fibers, thereby forming an adhesive wrapped structure; S5, splicing a plurality of the wrapped structures, and then wrapping them with the mixed fiber, while applying pressure and allowing the adhesive to penetrate into the wrapped structures to form an adhesive plate-like structure; S6. Perform microwave curing on the adhesive plate-like structure to obtain a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material.

2. The method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material according to claim 1, characterized in that: In S3, the coverage rate of the mixed fiber on the outer surface of the bamboo-based adhesive structure is 85% to 100%.

3. The method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material according to claim 2, characterized in that: In S3, the ratio of the number of the carbon fibers to the number of the nylon fibers is 1:4-6.

4. The method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material according to claim 1, characterized in that: In said S4, the heating temperature ranges from 110 to 160°C.

5. The method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material according to claim 1, characterized in that: In said S4, vibrating the plurality of wrapped structures back and forth comprises the following steps: S41, placing the plurality of wrapped structures on a vibration device, and adjusting the vibration direction to a horizontal direction; S42. Adjust the sweep mode of the vibration device to frequency doubling or linear, the sweep range to 21-35 Hz, and the output wave frequency to 13-20 Hz.

6. The method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material according to claim 1, characterized in that: In the step S5, the time of immersing in the adhesive is controlled to be 65-80 minutes; and the coverage rate of the mixed fiber on the outer surface of the wrapped structure is 70% to 85%.

7. The method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material according to claim 1, characterized in that: In S5, the specific steps of applying pressure to allow the adhesive to penetrate into the interior of the wrapped structure are: placing the wrapped structure into a sealed sample chamber, and pressing the adhesive into the interior by controlling a high-pressure pump connected to the sample chamber, with a pressure range of 45-60 MPa.

8. The method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material according to claim 1, characterized in that: In S6, performing microwave curing on the adhesive plate-like structure includes the following steps: S61, heating the adhesive plate-like structure with a microwave power of 70-100 W for 10-25 minutes, stopping the heating and keeping the temperature for 5-10 minutes, and then continuing to heat for 10-25 minutes; S62. Use a microwave power of 140-180 W to cure the adhesive plate-like structure for 35-50 minutes and then cool it naturally.

9. The method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material according to claim 1, characterized in that: In said S1, the specific steps of treating the bamboo-based material with chemical reagents are: placing the bamboo-based material in a boiling mixed solution of NaOH and Na2SO3 for heat treatment to remove part of the lignin and hemicellulose; and repeatedly washing the bamboo-based material with high-temperature deionized water and then soaking and washing with H2O2 to completely remove residual NaOH and Na2SO3.

10. The method for preparing a low-carbon, high-strength microwave-cured adhesive ecological bamboo-based material according to claim 1, characterized in that: In the step S2, the adhesive is an inorganic adhesive or an organic adhesive.

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